Presentation Information
[7p-N203-13]Helicity-Resolved Raman Spectroscopy on MoS2 coupled with Mie-Resonant Silicon Nanospheres
〇(P)Mojtaba Karimi1, Daisuke Shima1, Hiroto Shinomiya1, Hiroshi Sugimoto1, Minoru Fujii1 (1.Kobe Univ.)
Keywords:
Silicon Nanosphere,Helicity-Resolved,Raman Spectroscopy
In transition metal dichalcogenides (TMDCs) such as MoS2, the helicity of the Raman-scattered light is preserved or flipped for the out-of-plane chalcogen (OC) or in-plane metal-chalcogen (IMC) vibration modes, respectively. Recently, silicon nanospheres (Si NSs) supporting Mie resonances in the visible range, have been utilized in helicity preserving and controlling the emission directionality of 1L-MoS2. In this work, we investigate systematically the helicity and intensity of Raman signals from MoS2 coupled to Si NSs. Both theoretical and experimental results demonstrate that when the wavelength of the emitted photon is coupled to the magnetic dipole (MD) or magnetic quadrupole (MQ) modes of the Si NS the Raman scattered light is enhanced while the helicity of the light is preserved.